Improvement in attaching knob s to their spindles



[JOHN KELLER AND NATHANPEL snnnnn, or' ,HAennsfrown,

f MARYLAND.

Letters Patent No. 112,354, dated'March 7, `1871.

' fEIIhe' Schedule referred to in these Letters Patent and maldngpart ofthe samer- To `all whom it 'may conce/rai: i

Be it known that we, JoHN-RKELLER 'and 'Na- THANIEL SEHNER, oi' dHagerstown, in-thecounty of Washington and Stateot Maryland, haveinvented al certain new and useful Improvement in Door-Knobs;

and we do hereby declare the following to be a full, clear, and exactdescription thereof, reference being had to the accompanying drawingforming a part of the same, andin whichi t Figure 1 representsalongitudinal section of-my invention which is applied to an ordinarylock and door;

' knob with an annular flange, which fits loosely within acorrespondiugrecess formed in the rose of the knob, in combination with a plate,suitably attached to the rose-plate, and constructedV with a hollowshank or' cylinder, which is 'supplied with a screw-thread, workging inthe `screw-thread of the spindle of the opposite knob, substantially ashereinafter set fortnand claimed.

C To enable those skilled in the art to which my in-A ventionappertainsto makeand use the same, I will proceed to describe its construction andoperation.

- 1n the annexed drawing- A is an ordinary lock; and B, the door; A Y GC are knobs, attached to the Shanks D D' of the lockA.'l l A 'lhe shankD is madehollow to receive oneend of the spindle E ofthe shank )aud isconstructed withan annular tiange, d, which 'ts loosely within a recessconstructed inthe rose-plate F', as seen in iig. l. y

'Gr designates a plategwith a hollow-shank, g, which screws on thespindle'E.

rlhe plate G is set in a recess in the rose-plate F,

anni eine' naar cfm and secured thereto b y means of rivets or othersuit- I The object vof -so constructing the parts above described,forming my invention, is to admit of the latter being applied to doorsof various thicknesses with accuracy, without the' assistance of a screwor other fastening passing through the shank of'the knob and thence intothe spindle, for holding it in place, when so applied, which will .bemore fully apparent from the following'. v l It will be observed thatwhen it is desired to gradnate the-distance between the lock A and the'roseplate'F, to adapt my invention to the thickness of the door towhich it isto be applied, the rose-plate F to fit closely against thedoor, to be placed at any de-V sired point, making robin for thereception of the door'.

'.lhe use of a screw, in holding the shank ofthe knob npon'itsA spindle,it will be seen, is here dispensed with, as its place is filled by theplate G, with the hollow screw-threaded shank g.-

` Having thus described our invention, What We claim, and desire tosecnrelby Letters Patent, is A .The plate, provided with ascrew-threaded cylindrical apertnre and the rose-plate, constrnctediintwo parts, and so connected as to revolve together, in combination withthe ltlanged shank of the knob and the spindle, substantially as shownand described.O

In testimony that we' claim the foregoingas our in- .ve'ntion wehereunto sign our nainesras joint inventors,. in presence of twosubscribing witnesses, this 20th day oi'January, A. D. 1871.

" f ,JOHNR KELLER.

NATHANIEL SEHNER.

Witnesses Jos. R. Epson, A. RUPrER'r.

